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- 363Population
About Declo
Declo is a city in Cassia County. About 363 people lived here in 2024, by Census estimate. It sits at about 4,200 feet, 42 miles east of Twin Falls in a straight line.
Places listed for this area include Lake Walcott State Park and the Minidoka National Wildlife Refuge.
Moving to Declo
Start with homes, jobs and local services in and around Declo.
Cost of living
Declo is outside the Idaho metros with a 2024 federal price figure, so this uses the Idaho statewide level. A basket that costs $100 in the U.S. costs $95.49 here, under the U.S. average by 4.5%.
Open the calculator- Homes on the mapSearch homes for sale near town
- Public schools3 public schools
- DMV and utilitiesCounty offices, and gas service only where a utility names this town
- Local servicesIdaho businesses directory
- Moving to Idaho checklistDriver's license, vehicle registration, voter registration and more, from official Idaho sources
Public schools in Declo
All 3District, enrollment, and students per teacher from the federal 2024-25 directory. No ratings.
- Declo Elementary School
Cassia County Joint District · PK-5
453 students · 23.8 students per teacher
- Declo Jr High School
Cassia County Joint District · 6-8
249 students · 19.2 students per teacher
- Declo Senior High School
Cassia County Joint District · 9-12
326 students · 20.4 students per teacher
Services for Declo
All servicesDMV counters are the county offices. A gas utility appears only when its public list names Declo.
- Burley · Vehicles
203 E. 15th Street Burley, ID 83318-1862
· Mon. - Fri. 8:30 AM - 4:30 PM
- Burley · Driver's licenses
129 E 14th St Burley, ID 83318
· Mon. - Thurs. 8:00 AM - 4:30 PM
- Intermountain Gas · natural gas, on the company's town list. A main is not guaranteed at every address.
Allergy ratings in Declo
What a typical year looks like: Low, Moderate or High for each pollen season, plus wildfire smoke. Typical, general guidance. It is not medical advice. Pollen and smoke change with the weather every year, and what bothers you depends on what you are allergic to. See an allergist for testing.
Spring trees
March to June
Moderate
Rating: Moderate, on a scale of Low, Moderate, High, Very High. Peaks in AprilEarly-summer grass
Late May to July
High
Rating: High, on a scale of Low, Moderate, High, Very High. Late May to early JulyFall weeds and sagebrush
August to October
High
Rating: High, on a scale of Low, Moderate, High, Very High. Peaks in SeptemberWildfire smoke
Mostly July to September
Moderate
Rating: Moderate, on a scale of Low, Moderate, High. 3.4 days a year with air quality over 100. Worst year 7 (2021).
Regional rating. Declo has no pollen counter. These pollen ratings come from the Twin Falls station in the Magic Valley, 42 miles away.
How these ratings are worked out
Pollen is rated on the National Allergy Bureau bands for the grains of pollen in a cubic meter of air. Trees: Low under 15, Moderate 15 to 89, High 90 to 1,499. Weeds: Low under 10, Moderate 10 to 49, High 50 to 499. Grass: Low under 5, Moderate 5 to 19, High 20 to 199. The band is the one reached on the busiest quarter of counted days. A rating is typical, not a forecast: one wet or windy year can move it.
Spring trees, Moderate. Twin Falls NAB station, 757 counted days in 2003 to 2024: on the busiest quarter of days the tree count was 54 grains per cubic meter or more, which the NAB bands call Moderate. On the busiest tenth of days it was 125 or more.
Early-summer grass, High. No grass counts are published for Twin Falls. The Treasure Valley figure is used: the same Snake River Plain, and Twin Falls tree and weed counts match Boise's pattern. The NAB grass bands: Low under 5, Moderate 5 to 19, High 20 to 199, Very High 200 or more grains per cubic meter.
Fall weeds and sagebrush, High. Twin Falls NAB station, 536 counted days in 2004 to 2023: on the busiest quarter of days the weed count was 71 grains per cubic meter or more, which the NAB bands call High. On the busiest tenth of days it was 114 or more.
Wildfire smoke, Moderate. The average number of days a year the EPA's air quality index passed 100 ("unhealthy for sensitive groups" or worse), 2021-2025. Under 3 days is Low, 3 to 9 Moderate, 10 or more High. That grouping is ours, not the EPA's. Cassia County has no EPA monitor, so this uses Twin Falls County, 45 miles away. The count includes any cause, but across Idaho's monitors 86% of those days fell in July to September and 94% were fine particles (PM2.5), which is what wildfire smoke is made of (570 county-days, 2021-2025).
Not rated. Mold: no published mold spore counts for Idaho towns are in the data used, so there is no mold rating. House dust, pets and food allergies are outside this rating.
Sources
- National Allergy Bureau daily pollen counts, CDC release 2003 to 2024 (Boise, Twin Falls, Coeur d'Alene stations)
- NAB pollen level bands (grains per cubic meter)
- The Allergy Group, Boise: Southwest Idaho pollen seasons (clinic counts since 1971)
- EPA AirData: annual AQI by county
Today
Pollen data through 2003-2024, smoke data 2021-2025. Checked 2026-10-03.
Map of Declo
Parks, trails and things to do
All of IdahoPlaces in and around Declo, nearest first: everything tied to Declo plus anything within 15 miles of town.
Things to do
Lakes
- Lake Walcottlake · near Minidoka13 mi
- Lake Clevelandlake · near Albion14 mi
Ski areas
- Pomerelle Mountain Resortski area · near Albion14 mi
Museums
- Minidoka County Historical Society Museummuseum · near Rupert7.0 mi
- Cassia County Historical Societymuseum · near Burley7.9 mi
Parks (nearest 12 of 17)
- Lake Walcott State Parkstate park · near Minidoka13 mi
- Minidoka National Wildlife Refugewildlife refuge · near Minidoka13 mi
- Neptune Parknear Rupert6.7 mi
- Riverside Parknear Heyburn6.9 mi
- Scholer Parknear Heyburn7.0 mi
- Freedom Parknear Heyburn7.1 mi
- Lawn Parknear Heyburn7.1 mi
- Rupert Squarenear Rupert7.1 mi
- George Mass Veterans Parknear Rupert7.2 mi
- Lincoln Parknear Rupert7.3 mi
- Albion Parknear Albion7.8 mi
- Big Valleynear Rupert8.1 mi
Trails
- Pomerelle XC3.3 mi long · easy bike trail · near Albion13 mi
- Tator Tot1.2 mi long · intermediate bike trail · near Albion14 mi
- More Cowbell0.9 mi long · difficult bike trail · near Albion14 mi
- Tight Loose1.1 mi long · difficult bike trail · near Albion14 mi
- Pomerelle Traverse0.4 mi long · intermediate bike trail · near Albion14 mi
- Howell Canyontrailhead · near Albion13 mi
Distances are straight-line miles. From state and federal agency pages, the USGS place names list and OpenStreetMap contributors. Checked October 2, 2026. Check the official page for hours, fees and closures before you go.
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Moving checklist: setting up a home in Declo
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Builders around Declo
Stays near Declo
Local businesses
- Gossner's Magic ChaletCheese shopsHeyburn · 7.0 mi away
- Angela's Mexican FoodRestaurants · MexicanBurley · 7.6 mi away
- Albion MercantileIce creamAlbion · 7.8 mi away
- A.C. Drive InFast food · RestaurantsBurley · 8.1 mi away
- Bent BeanCoffee · RestaurantsBurley · 8.3 mi away
- Ace HardwareHardware storesBurley · 8.4 mi away